Gang-saw frame.



T. S. WILKIN, DECD. J. 3. 01112111112211, SPECIAL ADMINISTRATOR.

GANG SAW FRAME.

APPLICATION FILED JULY 16, 1908.

1,001,491. 1 Patented Aug. 22, 1911.

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T. S. WILKIN, DEGD.

J. B. OABPENTER, SPECIAL ADMINISTRATOR.

GANG SAW FRAME.

APPLICATION TILED JULY 16, 190B.

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alLUMBIA FLA T. S. WILKIN, DEG'D. J. B. CARPENTER, SPEUIALADMINISTRATOR.

GANG SAW FRAME.

APPLICATION FILED JULY 16, 1908.

1,001,491. Patented Aug. 22, 1911.

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TINTTED STATES PATENT OFFICE.

THEODORE S. WILKIN, OF OSI-IKOSI-I, WISCONSIN; JOHN B. CARPENTER, OFOSHKOSI-I, WISCONSIN, SPECIAL ADMINISTRATOR OF SAID THEODORE S. WILKIN,DECEASED.

GANG-SAW FRAME.

Specification of Letters Patent.

Application filed July 15, 1908.

Patented Aug. 22, 1911.

Serial No. 443,634.

To (:71 whom it may concern:

Be it known that I, l.unooonu S. \VILKIN, residing in Oshkosh, in thecounty of \Vinnebago and State of \Visconsin, have invented new anduseful Improvements in Gang-Saw Frames, of which the following is adescription, reference being had to the accon'ipanying drawings, whichare a part of this specification.

This invention has for its object to provide a gang saw with a framehaving passageways therein leading from the base of the side frames to aheadpiece connecting the upper ends of the side frames, raid headpiecebeing provided with passageways leading from the passageways of the sideframes to the live steam and exhaust chambers of the steam chest of anengine.

Another object of the invention is to improve upon details of gang sawframe eonstructions.

With the above and other objects in view the invention consists in thegang saw frame herein claimed, its parts and combinations of parts andall equivalents.

Referring to the accompanying drawings in which like characters ofreference indicate the same parts in the several views; Figure 1 is aside elevation of a gang saw frame constructed in accordance with thisinvention with a portion of the conduit therein broken away forclearness of illustration; Fig. 2 is a rear elevation thereof withportions of the conduits broken away; Fig. 3 is a central sectional viewthrough the engine and the headpiece; Fig. t is a sectional View of theheadpiece on the plane of line 4t4t of Figs. 5 and (i; Fig. 5 is asectional view of the engine on the plane of line of Fig. 3; Fig. (i isa plan view of the headpiece with the engine casing removed; l ig. 7 isa horizontal sectional view of the headpiece; and, Fig. 8 is a verticalsectional view through the headpiece taken on line 88 of Fig. 7

In these drawings 10 represents the side frames which are formed withconducting passages along their rear edges extending from the bottom tothe top thereof, the conducting passage of one side frame constituting asupply conc uit 11 having a pipe coupling 12 near its lower end forconnection with a source of steam or other fluid pressure supply and theconducting passage of the other side frame constituting an exhaustconduit 13 having a pipe coupling it near its lower end for connectionwith a suitable exhaust. The walls of the conduits ll and 13 are formedintegral with the side frames and form a part of the frame structure. Aheadpiece 15 connects the upper ends of the side frames and constitutesa shell having passageways formed therein leading to and from the enginewhich is mounted thereon.

The steam passageways of the headpiece are separated from each other andcomnumicate at the corners of the headpiece with the conduits l1 and 113of the side frames, there being connecting flanges sui rounding themeeting edges of these parts which are firmly secured together to formsteam tight connections the live steam passageway 1i) which communicateswith the supply conduit 11 l having a circular opening 17 leading to thevalve chamber '18 of the engine and the exhaust steam passageway 19which i'aommunicaites with the exhaust conduit 13 having a series ofopenings 20 comunmicating with corresponding openings 21 in an exhauststeam jacket 22 surrounding the cylinder 25 of the engine and leadingfrom the exhaust chamber. The rod 24. of the piston 25 of the engineworks through a packing gland 26 in the exhaust steam passageway it) ofthe headpiece and the valve rod 97 of the engine valve 28 works in apacking gland 29 in the live steam passageway of the headpiece. Theengine casing forming the cylinder and the steam chest is clamped to theheadpiece, preferably by bolts 30 passing through posts 31 for thatpurpose in the steam passages of the headpiece, and is of ordinaryconstruction, excepting for its steam communications, the valve chambercomnnmicating direct with the opening '17 of the headpiece and the exhaust jacket 22 passing from the exhaust chamber of the steam chestaround both sides of the cylinder on an incline and communicatingthrough the openings 21 extending around one half of the cylimler withthe corresponding openings $20 in the exhaust passageway 19 of theheadpiece.

The valve construction and the piston construction arc of a usual typeand do not enter into the present invention which relates moreparticularly to the frame construction for gang saws, wherein the steampassages to and from the engine are formed by the frame itself, theengine construction only becoming a part of the invention in so far asit is designed to cooperate with the structure of the gang saw frame,including the headpiece, to render such location and construction of thepassages feasible.

By means of this invention the usual pipe connections for live andexhaust steam are dispensed with, thus obviating the obstruction whichthey usually cause and avoiding much of the steam fitting which is aconstant source of trouble, owing to the parts becoming loose from thear of the machine in operation. The steam pipe connections being at thelower end of the side frames and preferably located beneath the floorenables the entire elimination of steam pipes from the mill room, afeature of structural advantage besides improving the appearance of themachine and increasing the convenience in working therewith.

What I claim as my invention is:

1. A gang saw, comprising side frames having conduits formed integraltherewith, a headpiece mounted on the side frames and provided withpassageways integral therewith registering with the conduits of the sideframes, there being openings in the headpiece from the passageways, agang sash, an engine connected with the gang sash and having a casingsecured to the headpiece comprising a cylinder and a steam chest havingtheir ends closed by means of the headpiece, and passages formed in theengine casing having openings communicating with the openings of theheadpiece.

2. A gang saw, comprising side frames having conduits formed integraltherewith, a headpiece connecting the side frames and provided withpassageways integral therewith communicating with the conduits of theside frames, there being openings in the headpiece leading from thepassageways thereof, a gang sash, an engine casing mounted on theheadpiece and comprising a cylinder and a steam chest, a piston workingin the cylinder, and connected with the gang sash a valve working in thesteam chest, packing glands in the headpiece surrounding the piston rodand the valve stem respectively, and a jacket leading from the exhaustchamber of the steam chest around the cylinder and having openingsleading therefrom communicating with openings in the headpiece of one ofthe passageways thereof, the opening of the other passage way of theheadpiece communicating with the interior of the steam chest.

3. A gang saw, comprising a frame, a headpiece mounted on the frame andhaving passageways integral therewith, there being openings in theheadpiece for said passageways, a gang sash, and an engine connectedwith the gang sash and having a casing secured to the headpiece and provided with openings registering with the openings of the headpiece.

4:. A gang saw, comprising a frame, a headpiece mounted on the frame andprovided with passageways integral therewith, there being openings inthe headpiece from the passageways, a gang sash, an engine connectedwith the gang sash and having a casing secured to the headpiececomprising a cylinder and a steam chest having their ends closed bymeans of the headpiece, and passages formed in the casing havingopenings communicating with the openings of the headpiece.

In testimony whereof, I afiiX my signature, in presence of twowitnesses.

THEODORE S. VVILKIN. Witnesses R. S. C. CALDWELL, ANNA F. SOHMIDTBAUER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Viashington, D. C.

